diff --git a/logo.gif b/logo.gif
new file mode 100644
index 0000000..0378bd1
Binary files /dev/null and b/logo.gif differ
diff --git a/mimi.tcl b/mimi.tcl
new file mode 100644
index 0000000..31b8da1
--- /dev/null
+++ b/mimi.tcl
@@ -0,0 +1,108 @@
+package require Tk
+
+proc ? L {lindex $L [expr {int (rand ()* [llength $L])}]}
+
+proc validateFile name {
+  set ext [file extension $name]
+  if {$ext ni {.fas .fasta .nex .nexus .tnt .ss .phy .phylip}} {
+    tk_messageBox -icon error -type ok -message "extension of file must be fas fasta nex nexus tnt ss phy phylip"
+    return 0
+  } else {
+    return 1
+  }
+}
+
+proc runMimi {} {
+  global input output mimi
+  if {[validateFile $input] && [validateFile $output]} {
+    if {[file exists $mimi]} {
+      exec $mimi -i $input -o $output
+      tk_messageBox -icon info -type ok -message "Success"
+    } else {
+      tk_messageBox -icon error -type ok -message "Can't find the path of MiMi"
+    }
+  }
+}
+
+proc clearAll {} {
+  global input output mimi
+  set input ""
+  set output ""
+}
+
+proc chooseMimi {} {
+  global mimi
+  set file [tk_getOpenFile]
+  if {$file ne ""} {
+    set mimi $file
+  }
+}
+
+proc chooseInput {} {
+  global input
+  set file [tk_getOpenFile]
+  if {$file ne ""} {
+    set input $file
+  }
+}
+
+proc chooseOutput {} {
+  global output
+  set file [tk_getSaveFile]
+  if {$file ne ""} {
+    set output $file
+  }
+}
+
+proc quitApp {} {
+  exit
+}
+
+proc helpApp {} { 
+  tk_messageBox -icon info -type ok -message "Thanks to my beloved daughter MiMi (Ragdoll cat) for accompanying me in my life, mom loves you forever.\n\nGuoyi"
+}
+
+#bind . <Escape> {quitApp}
+wm protocol . WM_DELETE_WINDOW {quitApp}
+
+wm iconphoto . [image create photo -file logo.gif]
+
+set input ""
+set output ""
+set mimi ""
+
+wm title . "Mimi GUI"
+
+# 创建菜单栏
+menu .menubar
+.menubar add cascade -label "Settings" -menu .menubar.file
+menu .menubar.file
+.menubar.file add command -label "Select MiMi Path" -command chooseMimi
+.menubar.file add separator
+.menubar.file add command -label "Quit" -command quitApp
+
+.menubar add cascade -label "Help" -menu .menubar.help
+menu .menubar.help
+.menubar.help add command -label "About" -command helpApp
+
+# 配置菜单栏到顶层窗口
+. configure -menu .menubar
+
+# 创建输入输出框和按钮
+grid [ttk::frame .c -padding "3 3 12 12"] -column 0 -row 0 -sticky nwes
+grid columnconfigure . 0 -weight 1; grid rowconfigure . 0 -weight 1
+
+grid [ttk::label .c.ilbl -text "Input"] -column 1 -row 1 -sticky e
+grid [ttk::entry .c.input -width 20 -textvariable input] -column 2 -row 1 -sticky we
+grid [ttk::button .c.ibtn -text "Select" -command chooseInput] -column 3 -row 1
+
+grid [ttk::label .c.olbl -text "Output"] -column 1 -row 2 -sticky e
+grid [ttk::entry .c.output -width 20 -textvariable output] -column 2 -row 2 -sticky we
+grid [ttk::button .c.obtn -text "Select" -command chooseOutput] -column 3 -row 2
+
+grid [ttk::button .c.run -text "Run" -command runMimi] -column 2 -row 3
+grid [ttk::button .c.clear -text "Clean" -command clearAll] -column 3 -row 3
+
+foreach w [winfo children .c] {grid configure $w -padx 5 -pady 5 }
+
+vwait forever